In the long arc of the automobile's evolution, certain machines arrive not merely as products but as punctuation marks — and the Mercedes-AMG A45S Final Edition is one such closing sentence. After seven years, the W177 generation bows out with its 421-horsepower turbocharged heart beating unchanged, dressed in yellow accents that feel less like decoration and more like a farewell gesture. The hot hatchback, that particular expression of mechanical joy — small, loud, unassisted by electrons — is not disappearing overnight, but its succession by a 680-horsepower electric CLA45 signals that the e